HONOLULU (HawaiiNewsNow) - For the past five years, 'ohia trees on Hawai'i Island have been under attack -- dying mysteriously and rapidly from an unknown disease, but researchers are now one step ...

OAKLAND (KPIX 5) -- There's new color in the East Bay Hills but they are not fall colors. The changing leaves may be the result of a mysterious and deadly tree fungus attacking acacia trees all across ...

There's nothing quite as majestic and imposing as a fully-grown cedar tree with its broad horizontal branches and fragrant evergreen needles in delightful shades of green and blue. Thanks to its ...

Community forests and private-property shade trees in northeast Colorado are facing two insect and disease threats of significant concern – thousand cankers disease of black walnuts, and emerald ash ...

Researchers with the University of Minnesota have discovered a tree-killing pathogen in the state for the first time.

Hundreds of Ohia trees are being killed by a mysterious disease, and officials aren’t sure how to stop it. Hawaii Department of Land and Natural Resources officials say all they have been able to do ...

With the help of a new grant, a team of researchers at the University of Minnesota researchers are studying oak wilt, an invasive fungus that is threatening Minnesota’s oak tree population. Sometimes ...

ANN ARBOR, Mich. (CBS DETROIT) - Several cases of oak wilt fungus have been confirmed in the Bird Hills Nature Area after a concerned resident reported a tree that looked unhealthy to city officials.

Pick a tree at random anywhere in Southern California and examine it closely. Chances are good that you will find small wet stains on its trunk. Those wet stains are most likely signs of a fatal tree ...

UK project by Leicester University and aerial map firm Bluesky reveals lethal infections P. ramorum fungus, Dutch Elm disease and Sudden Oak Death. Lidar-mapped: the UK's Forest of Dean. Researchers ...

Yes, it's almost officially autumn, but no, our trees shouldn't be dropping their leaves yet. The falling leaves and baring trees aren't a case of Mother Nature confusing September with October. Blame ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Needle damage can cause major commercial and ornamental damage to conifers in ...